Method of providing casks with a coating.



' full, clear, and exaot description the in- UNITED STATES PATENTOFFICE.

REINHOLD ROSTOGK, OF KLOS'IERNEUBURG, AUSTRIA-HUNGARY.

us'rnon on momma casks wr'rr-r A conrr'ne.

To all whom it may concern: 7

Be it known that I, Rnnvnom Ros'roox,

manufacturer of cement ware, a subject of the Emperor of Germany,reslding in Klosterneubur near Vienna, Austria, have invented a ethodfor Providing Cement or Concrete Casks with a Protective Coating;and'ldo here declare the followin to be a vention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to cement or concrete casks which are providedwith an internal coating for the urpose of preventing the contents ofthe ca' coming into contact with the cement or concrete, and beingthereby deteriorated. Internal coatings of resin,-varnish and the likehas been directly applied to the cement. or concrete, but it 1s found inpractice that the coatings so ap-' plied are apt to scale ofl, so thatthe beer or other contents of the cask comes into direct contact withthe cement or concrete, thereby deteriorating. In order to avoid thisdifiiculty, a preliminary coati has been applied to the cas s before thefinal coating was applied, the first coating entering lnto the ores ofthe cement or concrete. This metho however, did not fulfil the ob'ectsaimed at.

n order to rovide a smooth, internal surface" to which t e coating orcoatin s will well adhere, it is necessary to first app y a lining ofplaster,.a plaster mixed with bers being best ada ted to be used foralining.

Accor 'rig to the present invention, alining of plaster is firstapplied, and then, ber fore the actual protective coating is applied, acoating of great fluidity-such-as) asphalt, tar and the like-is applied.

l n-carryi out the invention according to one mode, t e cement orconcrete cask is .first provided, on the inside i with a lining ofplaster-such as cement p aster magnesite plaster, hydraulic plaster, andthe likewhich in a known manner is mixed with mineral, vegetable, oranimal fiberssuch as asbestos, wood-fiber, cork, jute,-ramie, linen,cotton, hairs of animals, and the like. After this lining is dry, it iscovered 'with a coating I Speeification of Letters Patent. Applicationfiled March 11, 1901. 1 sem No.'3d1,812.

of great fluidity Patented April 14, 1908.

of some material which is very fluid and which is adapted to unite withthe plaster and the. protective coating-such as asphalt, tar, and thelike. When this coating is dry, the actual protective coating of pitcresin, varnish, or the like is apphed. By simultaneouslycombining thesemethods referred to-each of which is known in itselfa coatcertained thenature of my said invention;

and in what manner-the same is to be performed, I declare that what Iclaim is:

1. A method of roviding cement or concrete casks or the li o with aprotective coating, consisting in first lini the same with a plastermixed with fibers, t en impregnati the linin ,With a've fluid substancesuc as aspha t, tar, and t e like, and causing it to penetrate saidliningand thus contact with the surface of the cask and finally applyingthe protective coating-such as res n, varnish, and the like.

2. A method of coating cement or concrete casks or the like whichconsists in first lining the cask with a plaster, then impregnating thelinin 'with a very fluid substance adapted to umte with the protectivecoating and the plaster, and causing it to penetrate said lining andthus contact with the surface of the cask, and finall applying theprotective coating, substantia ly as described.

Signed at the United States consulategeneral in the city of Vienna,Austria this 23rd day of Februar ,"A. D. 1907.

-. REI HOLD ROSTOOK.

Witnesses:

' HARRY BnLuoN'r,

Anvas'ro S. 'Hooun.

